Word on the street is that the next-gen Cadillac CTS-V, due as a 2014 model, will retain its force-fed powerplant but its design will be based on the modern 6.2-liter LT1 that will find a home under the hood of the new Corvette. General Motors is reportedly working on two variants of the engine, one supercharged and the other with twin turbochargers - one of the engines will serve duty in the upcoming CTS-V and the brand's upcoming rear-wheel drive flagship. Expect the engine, regardless of its intake method, to make more power than the current powerplant (a 6.2-liter V8 with an Eaton Twin Vortices Series supercharger developing 556 horsepower and 551 pound-feet of torque), but with improved efficiency.